Recently, according to foreign media reports, Professor William Chen of Nanyang Technological University in Singapore invented a biodegradable food packaging. The package is made of cellulose and extracted from the waste produced by soy products.
William said the soybeans were crushed and used to make tofu and soy milk, and the remaining residue was usually discarded. If these residues are fermented, when the microorganisms engulf their nutrients, cellulose can be left behind and made into plastic packaging.
Currently, most cellulose plastic packaging on the market is made of wood and corn. But the wood and corn were planted specifically to make plastic packaging, occupying a lot of land.
In contrast, it is more environmentally friendly to make bean curd residue extract into packaging bags. Professor William's invention can solve two problems at the same time, reducing both plastic waste and food waste. In addition to bean curd residue, William discovered that the cellulose in the durian shell can also be made into plastic film.
Professor William Chen said: "My dream is to make Singapore an innovation center and let neighboring countries see the benefits of our low-cost new inventions. Once they see the benefits of this new invention, I hope that neighboring countries will also This invention can be adopted so that we can achieve a win-win situation. "
It is reported that in Singapore, the amount of food waste generated each year can fill 15,000 Olympic-sized swimming pools.
However, some people questioned that some bio-made plastics require a long time to degrade completely at temperatures exceeding 50 ° C. If bioplastics are not disposed of, it may exacerbate the problem of plastic pollution.
In this regard, William said that the soybean plastic packaging he invented could automatically degrade within a month without heating.
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